SEISMIC INVESTIGATION OF THE MERRIMELIA FIELD

1983 ◽  
Vol 23 (1) ◽  
pp. 192
Author(s):  
B. L. Smith

The Merrimelia oil and gas field, 40 km north of Moomba in SA, is located on the central dome of the Gidgealpa-Merrimelia-Innamincka Trend within the Cooper/Eromanga Basins.Geophysical studies have been instrumental in the investigation of the field since the discovery of commercial Permo-Triassic gas at Merrimelia- 5 in 1970 based on the results of the Merrimelia Seismic Survey. Subsequent seismic recorded during the 1980 Karawinnie Survey resulted in the location of Merrimelia-6 which, in 1981, discovered commercial oil in the Jurassic Namur Member and Hutton Sandstone, and Triassic gas, previously unknown.To allow accurate mapping of the field's oil reserves, a detailed half kilometre grid was recorded during the 1981 Namooka Seismic Survey. The programme comprised 110 km of 24-fold Vibro- seis coverage. Interpretation of the seismic and well data has resulted in recognition of a complex stratigraphic component superimposed on the Merrimelia structural high. Considerable detailed seismic work has contributed to a better understanding of the seismic reflection sequence and hence improved geophysical prognoses.Seismic studies of the Merrimelia field are continuing as further discoveries, most recently oil in the Triassic at Merrimelia-12 and gas in the Tirrawarra Sandstone at Merrimelia-13, are made in the field area.

Author(s):  
B. M. Nuranbayeva ◽  
◽  
E. S. Oryngozhin ◽  
D. R. Alaguzov ◽  

During the period of depletion of the main oil reserves in fields entering the last stage of development due to the priority development of highly productive highly permeable reservoirs, an increasing proportion of residual reserves become difficult to recover.Therefore, it becomes relevant to use effective methods of increasing oil recovery in existing fields, most of the original volume of geological reserves remains in the deposits. One of these methods is unsteady waterflooding, which has proven its effectiveness in a number of fields.


2013 ◽  
Vol 16 (2) ◽  
pp. 48-63
Author(s):  
Luan Thi Bui

Up to now, reservoir system in Cuu Long basin have been known including Pre-Tertiary fracture basement, sandstone of lower-Oligocene formation (Porosity from 12 to 16%, permeability from 1 to 250 mD), sandstone of upper-Oligocene formation (Porosity from 12 to 21%, permeability from 2 to 26 mD), sandstone of lower-Miocene formation (Porosity from 14 to 28%, permeability from 1 to 1300 mD). However, the result of evaluation of analysis of data at block 02 is very good oil shows in sandstone of middle-Miocene formation, the gas oil ratios of this oil is from medium to high, predominantly light oil and hydrocacbon have not changed yet. The result of analysis of core samples and petrophysis data of sandstone of middle-Miocene is that porosity is from <10 to 31% and permeability is from 100 to 3066 mD. Following geology structure and combining data of seismic, petrology, stratigraphic and geochemical source rock indicated oil of middle-Miocene was relative with lower-Oligocene and upper-Oligocene. These rocks contain abundant of organic matters that could produce hydrocarbon well. Then, hydrocarbon migrated and accumulated into fold traps in lower and middle-Miocene. Proven reserves 1P (P50) of two reservoir sets BII .2.20 và BII .1.10 is 70.7 MMbbl and proven plus probable reserves 2P(P50) of two reservoirs BII .2.20 và BII .2.30 is 73.11 MMbbl. Discovering oil and gas in middle-Miocene at block 02 openes up new target in exploration of oil and gas field in margin zones of Cuu Long basin.


2013 ◽  
Vol 734-737 ◽  
pp. 1286-1289 ◽  
Author(s):  
Lin Cong ◽  
Wen Long Li ◽  
Jing Chao Lei ◽  
Ru Bin Li

Internationally the research of low permeability oil reservoir is a difficult point in the exploration and development of oil and gas field. This thesis, based on the research methods of low permeability reservoirs at home and abroad, summaries several major problems encountered in the process of low permeability oil exploration and development under the current technical conditions as well as the corresponding, but more effective technical measures that need to be constantly improved. And that exploration and development of low permeability of the reservoir will be the main battle field for some time in the future of oil exploration and development.


2015 ◽  
Author(s):  
Xiaodong Luan ◽  
Qingyun Di ◽  
Zhiguo An ◽  
Cheng Xu ◽  
Xianxiang Wang ◽  
...  

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